hello undertow developers!
we are trying to disable logging of io exceptions like the comment in UndertowLogger.java
suggests:
/**
* Logger used for IO exceptions. Generally these should be suppressed, because they
are of little interest, and it is easy for an
* attacker to fill up the logs by intentionally causing IO exceptions.
*/
UndertowLogger REQUEST_IO_LOGGER = Logger.getMessageLogger(UndertowLogger.class,
UndertowLogger.class.getPackage().getName() + ".request.io");
so we disable io.undertow.request.io
but it seems that there are still io exceptions logged as io.undertow.request, i see log
entries like this:
io.undertow.request 2017-06-08 23:44:14,898 UT005003: IOException reading from channel
java.io.IOException: UT000128: Remote peer closed connection before all data could be
read
at
io.undertow.conduits.FixedLengthStreamSourceConduit.exitRead(FixedLengthStreamSourceConduit.java:338)
at
io.undertow.conduits.FixedLengthStreamSourceConduit.read(FixedLengthStreamSourceConduit.java:255)
at
org.xnio.conduits.ConduitStreamSourceChannel.read(ConduitStreamSourceChannel.java:127)
at
io.undertow.channels.DetachableStreamSourceChannel.read(DetachableStreamSourceChannel.java:209)
at
io.undertow.server.HttpServerExchange$ReadDispatchChannel.read(HttpServerExchange.java:2287)
at
io.undertow.server.handlers.form.FormEncodedDataDefinition$FormEncodedDataParser.doParse(FormEncodedDataDefinition.java:134)
at
io.undertow.server.handlers.form.FormEncodedDataDefinition$FormEncodedDataParser.handleEvent(FormEncodedDataDefinition.java:115
to me it seems that the handler for form encoded post data uses the wrong logger for its
io exceptions.
best, sascha